| 摘要 |
PURPOSE: A bridge construction method using a girder incrementally prestressed by internal and external tension members is provided to construct a bridge safely and economically by designing the section of a girder effectively. CONSTITUTION: The bridge construction method using a girder incrementally prestressed by internal and external tension members comprises the steps of: manufacturing a PSC(prestressed concrete) girder(100) provided with an external tension member to apply prestress to resist the self-weight of a girder by anchoring both ends of a girder of a primary internal tension member(210) and to apply prestress additional on a girder using eccentricity; after tensioning the external tension member, applying prestress on the PSC girder and placing/curing a slab; and applying prestress additionally by removing the external tension member and anchoring a secondary internal tension member(220) on both ends of a girder.
|
